Manchester United have agreed to sign Argentina central defender Lisandro Martinez from Ajax in a deal worth 67m euros (£57m).

The 24-year-old is expected to sign a five-year contract with the option of a further year.

The move, for an initial £49m, is subject to a medical, personal terms being finalised and a UK visa.

The deal includes £8.5m in add-ons and £2.2m in solidarity payments to Martinez’s former clubs.

He made 120 appearances for Ajax after moving from Argentinian side Defensa y Justicia for £6.3m in 2019, and also played for Newell’s Old Boys.

Martinez has won seven caps for Argentina since making his senior debut in March 2019.

He is United’s third summer signing after Tyrell Malacia joined from Feyenoord and Christian Eriksen moved on a free transfer.

The Old Trafford club said it was “delighted” to announce an agreement had been reached with Ajax.

Martinez played under new United manager Erik ten Hag at Ajax and won the Eredivisie title with the club in 2021 and 2022, as well as the Dutch Cup in 2021.

He was also Ajax’s player of the year for the 2021-22 season.